Retardation film, elongated circularly polarizing plate produced using said retardation film, and organic EL display
In this retardation film: the retardation axis has a 10-80 DEG angle with respect to the direction of elongation; cellulose acylate having a degree of acyl substitution of 2.0-2.7 is contained; Ro-550 is 115-160 nm; delta Ro is 3-30 nm; delta Rc, delta Ra, and Rc and Ra at a wavelength of 550 nm are...
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